Figure 3From: Synthesis and characterizations of Ni-NiO nanoparticles on PDDA-modified graphene for oxygen reduction reactionTGA result of Ni-NiO/PDDA-G nanohybrids. (a) Ni-NiO/PDDA-G. (b) The PtAu/PDDA-G and Au/PDDA-G.Back to article page